android - TIMEZONE_CHANGED intent being received every few seconds -

i use broadcastreceiver timezone_changed action reset alarms using alarmmanager make sure alarm runs @ set time, not few hours earlier or later, depending on time zone change.

however in latest log sent user, saw information intent timezone_changed action being received every few seconds user complaining app being glitchy.

here's broadcastreceiver's onreceive code

@override public void onreceive(context context, intent intent) {     utils.log("ontimechange");     string action = intent.getaction();      if (action.equals(intent.action_time_changed)) {         utils.log("timechange");     } else if (action.equals(intent.action_timezone_changed)) {         utils.log("timezonechanged");     }     broadcastsmanager.updatebroadcastsfromalarms(context,             alarmsdbadapter.getinstance(context)); } 

the manifest's intent filter:

<intent-filter>     <action android:name="android.intent.action.timezone_changed" />     <action android:name="android.intent.action.time_set" /> </intent-filter> 

and part of log (it goes on hour - full lenght of log)

1. 19/4 7:41:54 - posting alarm 3 8:15 (in 0h) 2. 19/4 7:44:29 - ontimechange 3. 19/4 7:44:29 - timezonechanged 4. 19/4 7:44:29 - posting alarm 3 8:15 (in 0h) 5. 19/4 7:44:54 - ontimechange 6. 19/4 7:44:54 - timechange 7. 19/4 7:44:54 - posting alarm 3 8:15 (in 0h) 

it's samsung galaxy s iii (android v 4.1.2). strange thing is, doesn't happen on s iii. user has set "automatic timezone change provider" option enabled on his/her device , information sent every few seconds?

has expierienced it? guess add option check if timezone has changed before updating broadcasts, still getting receiver called every few seconds...

i still don't know why timezone change , time set called often, able work out solution, lets me find out when reaction needed.

also listening timezone changes now.

sharedpreferences prefs = preferencemanager.getdefaultsharedpreferences(context);  string oldtimezone = prefs.getstring(pref_timezone, null); string newtimezone = timezone.getdefault().getid();  long = system.currenttimemillis();  if (oldtimezone == null || timezone.gettimezone(oldtimezone).getoffset(now) != timezone.gettimezone(newtimezone).getoffset(now)) {      prefs.edit().putstring(pref_timezone, newtimezone).commit();      logger.log("timezone time change");     //update alarms } 

i added zone's time check, because found out, althought zones change, not differ in time in way. users claimed didn't travel anywhere far when numerous changes in zones detected - regular trips work , back.

check limited number of unneeded operations.